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Posted to dev@apex.apache.org by "David Yan (JIRA)" <ji...@apache.org> on 2016/11/30 21:59:58 UTC

[jira] [Updated] (APEXCORE-580) Add methods for processing and emitting control tuples

     [ https://issues.apache.org/jira/browse/APEXCORE-580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Yan updated APEXCORE-580:
-------------------------------
    Description: 
DefaultOutputPort needs to have a emitControl method so that operator code can call to emit a control tuple.

DefaultInputPort needs to have a processControl method so that operator would be able to act on the arrival of a control tuple.

We need to design this so that the default behavior is to propagate control tuples to all output ports, and it should allow the user tp easily change that behavior. The user can selectively propagate control tuples to certain output ports, or block the propagation altogether.

  was:
DefaultOutputPort needs to have a emitControl method so that operator code can call to emit a control tuple.

DefaultInputPort needs to have a processControl method so that operator would be able to act on the arrival of a control tuple. 




> Add methods for processing and emitting control tuples
> ------------------------------------------------------
>
>                 Key: APEXCORE-580
>                 URL: https://issues.apache.org/jira/browse/APEXCORE-580
>             Project: Apache Apex Core
>          Issue Type: Sub-task
>            Reporter: David Yan
>
> DefaultOutputPort needs to have a emitControl method so that operator code can call to emit a control tuple.
> DefaultInputPort needs to have a processControl method so that operator would be able to act on the arrival of a control tuple.
> We need to design this so that the default behavior is to propagate control tuples to all output ports, and it should allow the user tp easily change that behavior. The user can selectively propagate control tuples to certain output ports, or block the propagation altogether.



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